#include<stdio.h>
#include<stdlib.h> 
char change(char d)
{ 
    char dd; 
	dd=(d+2-'a')%26+'a' ;
	putchar(dd);
	return 0;
}
int  main()
{
	char aa;
	char a=getchar();
	while(a!='\n'){
	change(a);
	/*aa=(a+2-'a')%26+'a';
	putchar(aa);*/
	a=getchar();
	}	
	return 0;
}
